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Resource Management

Looking up at heron rookeries.There are 15 rookeries on the refuge. Each year biologists count the nests and look for productivity. Great blue heron, great egrets and double-crested cormorants are neighbors in these treetop rookeries.

Many techniques are used by Refuge staff to monitor and manage wildlife and habitat. From aircraft, biologists check on the nesting success of bald eagles, great blue herons, and egrets. They also fly to count waterfowl during migration. Biologists capture and band wood ducks to learn about migration and population trends. Special studies look for answers to where tundra swans feed, when raptors migrate south, or which habitats are used by turtles, snakes and secretive marsh birds.
Last Updated: Oct 30, 2012
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